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首页> 外文期刊>Russian journal of marine biology >Somatic Organic Content of the Ctenophores Mnemiopsis leidyi (Ctenophora: Lobata) and Beroe ovata (Ctenophora: Beroida) in Early Ontogenetic Stages
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Somatic Organic Content of the Ctenophores Mnemiopsis leidyi (Ctenophora: Lobata) and Beroe ovata (Ctenophora: Beroida) in Early Ontogenetic Stages

机译：On虫的拟虫早期阶段的体细胞有机物含量（Ctenophora：Lobata）和Beroe ovata（Ctenophora：Beroida）

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摘要

The organic matter content in the eggs and early larvae of the ctenophores Mnemiopsis leidyi and Beroe ovata from the Black Sea was determined using the adapted microtechnique of dichromate oxidation. The content of organic matter in the eggs of M. leidyi (0.25 μg/indiv.) was 5 times less than in B. ovata (1.28 ± 0.29 (Xg/indiv.). The somatic content of organic matter was 0.25 + 0.09 μg/indiv. (25.1 ± 8.3 μg/mg, wet wt) for 2-day-old larvae of M. leidyi (0.2-0.3 mm in body length) and 1.37 ± 0.19 μg/indiv. (67.1 ± 5.7 μg/mg wet wt) for larvae of B. ovata (0.4 mm in body length). The specific organic content of larvae of both species steadily decreased with an increase in ctenophore body size and weight, approaching 3-4 μg/mg of wet weight for 2 mm specimens of M. leidyi and 3-5 μg/mg of wet weight for 6 mm B. ovata. The specific organic content of early larvae was 20-30 times higher than that of adult ctenophores. The results of this investigation could be useful in the evaluation of the energy budget for somatic growth and generative production in these species. Calculations indicate that with specific wet weight growth rates of 0.43/day for M. leidyi larvae and 0.29/day for B. ovata larvae, their true organic increases are respectively 30 and 38% less, i.e., no more than 0.31/day for the former and 0.18/day for the latter species.
机译：使用改良的重铬酸盐氧化微技术测定了来自黑海的ct虫Mnemiopsis leidyi和Beroe ovata的卵和早期幼虫中的有机物含量。莱比迪鸡蛋中的有机物含量（0.25μg/个）比卵形双歧杆菌（1.28±0.29（Xg /个））少5倍，体细胞中的有机物含量为0.25 + 0.09μg /个体（25.1±8.3μg/ mg，湿重），用于2天大的莱比耶幼虫（体长0.2-0.3 mm）和1.37±0.19μg/个人（67.1±5.7μg/ mg卵的B. ovata幼虫（体长0.4 mm），两种物种的幼虫的特定有机物含量随着c虫体型和体重的增加而稳步下降，在2 mm时接近湿重3-4μg/ mg莱迪衣原体标本和湿重3-5μg/ mg的卵形双歧杆菌为6毫米，早期幼虫的比有机物含量是成年尾吸虫的20-30倍，这项研究的结果可用于对这些物种的体细胞生长和生殖生产的能量收支进行评估，计算表明，莱比迪幼虫的比湿重增长率为0.43 /天，卵形芽孢杆菌为0.29天。在幼虫中，它们的真实有机增加分别减少30％和38％，即前者不超过0.31天/天，后者不超过0.18 /天。

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